2 x 100W Class D Bluetooth Audio Amplifier Board - TSA7498

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This is a 2x100W audio amplifier board with AudioB plus Bluetooth module. It's integrated ST high performance TDA7498 which support dual channel audio amplification. Both of channels are capable of outputting nominal power simultaneously and continuously. This board can be powered by any DC14V-39V* power supply. It have a smart cooling system, the fan not working in normal case to reduce the noise. Only start when the chip temperature > 65°C.

It's perfect for your Hi-Fi application, the audio source can be RCA input or Bluetooth. Compatible with all Bluetooth devices that support media audio, including iPhone,Android. Let your smartphone paired with this board, play a music. So easy!

Note: We had tested it. It also works well with 12VDC power. But we suggest use DC14V-39V power if possible.

Specification:

Following table lists all typical data of the Amp board. For full specification, please refer to the data sheet of ST’s TDA7498 chip.

TA = 25 °C, fIN = 1 kHz sine wave, RL= 6Ω, VCC = 36V. (Unless otherwise stated)

Parameter	Condition	Min	Typ	Max
Supply Voltage (v)	-	14	36	40
Quiescent Current (mA)	FAN ON,STBY Disable	-	90	-
	FAN ON,STBY Enable	-	50	-
	FAN OFF,STBY Disable	-	40
	FAN OFF,STBY Enable		10
Input Sensitivity (mV)	25.6dB	-	1356	-
	31.6dB		696
	35.1dB		460
	37.6dB		341
Input Impedance (Kohm)	-	48	60	-
Gain (dB)	GAIN0 = L, GAIN1 = L	24.6	25.6	26.6
	GAIN0 = L, GAIN1 = H	30.6	31.6	32.6
	GAIN0 = H, GAIN1 = L	34.1	35.1	36.1
	GAIN0 = H, GAIN1 = H	36.6	37.6	38.6
Output Power (W rms)	THD = 10%	-	100	-
Efficiency (%)	Both channels output rating power.	-	>90	-
Minimum Load (ohm)	-	-	6	-
Frequency Response (dB)	±3dB	20	-	22k
Operating Temperature (℃)	-	0	20	50